#include<bits/stdc++.h>
using namespace std;
#define int long long
#define endl "\n"
const int n = 31;
//int arr[n]={0},arr2[n] = {0};
string s, s2, x, y;
void change int i)
{
	if ( i > 0) {
		x[i - 1] ^= 1;
	}
	if (i < x.length() - 1) {
		x[i + 1] ^= 1;
	}
	x[i] ^= 1;
}
int cnt = 0;

signed main()
{
	cin >> s >> s2;

	
	return 0;
}
